Hydrometallation of amino-dialkynylgermanes - A gallium hydride oligomer and intramolecular Lewis acid-base interactions

Abstract

The compound H5C6(H)Ge[C(GaCMe3) = C(H)CMe3]2(μ-H)3[Ga(CMe3)2], 2, was isolated in trace quantities from the reaction of Et2N-Ge(C≡C-CMe3)3 with excess H-Ga(CMe3)2. Compound 2 has a unique molecular structure with a Ga3H3 heterocycle of which one Ga-H-Ga group is bridged by a dialkenylgermanium unit. The molecular structure of a second compound (3) is reported, which may be described as a spiro-germane and has AlNGeC and AlC2Ge heterocycles. The rings are formed by intramolecular Al-N and Al-C interactions.